How do you differentiate f(x)=(x)*(x)-2x^2 using the product rule?

Nov 23, 2015

Answer:

Write it as $x \left(x - 2 \cdot x\right)$ and apply the product rule to this product.

Explanation:

You are given $x \cdot x - 2 {x}^{2}$ and this is a sum not a product, so you cannot apply directly the product rule; in order to apply the product rule you need to transform it first into a product.